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REVENUE RECOGNITION (Tables)
9 Months Ended
Sep. 30, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of disaggregation of revenue
Passenger Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions)2023202220232022
Ticket$11,733 $10,247 $32,801 $26,005 
Loyalty travel awards902 786 2,547 2,073 
Travel-related services484 431 1,387 1,251 
Passenger revenue$13,119 $11,464 $36,735 $29,329 
Other Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions)2023202220232022
Refinery$935 $1,134 $2,817 $3,835 
Loyalty program791 655 2,291 1,877 
Ancillary businesses212 249 657 665 
Miscellaneous277 233 790 640 
Other revenue$2,215 $2,271 $6,555 $7,017 
Schedule of activity in loyalty program deferred revenue
The table below presents the activity of the current and noncurrent loyalty program deferred revenue and includes miles earned through travel and miles sold to participating companies, which are primarily through marketing agreements.

Loyalty program activity
(in millions)20232022
Balance at January 1$7,882 $7,559 
Miles earned3,164 2,496 
Miles redeemed for air travel(2,547)(2,073)
Miles redeemed for non-air travel and other(126)(122)
Balance at September 30
$8,373 $7,860 
Schedule of revenue by geographic region Our passenger and operating revenue by geographic region is summarized in the following tables:
Passenger revenue by geographic region
Passenger Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions)2023202220232022
Domestic$8,662 $8,154 $25,200 $22,035 
Atlantic3,110 2,313 7,157 4,553 
Latin America788 659 2,846 2,084 
Pacific559 338 1,532 657 
Total$13,119 $11,464 $36,735 $29,329 

Operating revenue by geographic region
Operating Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions)2023202220232022
Domestic$10,461 $10,118 $30,607 $28,322 
Atlantic3,497 2,705 8,223 5,538 
Latin America891 752 3,208 2,417 
Pacific639 400 1,787 870 
Total$15,488 $13,975 $43,825 $37,147